diff options
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 0ac9e29..e322ecb 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -11382,6 +11382,8 @@ fold_binary (enum tree_code code, tree type, tree op0, tree op1) if (prec < HOST_BITS_PER_WIDE_INT || newmask == ~(unsigned HOST_WIDE_INT) 0) { + tree newmaskt; + if (shift_type != TREE_TYPE (arg0)) { tem = fold_build2 (TREE_CODE (arg0), shift_type, @@ -11392,9 +11394,9 @@ fold_binary (enum tree_code code, tree type, tree op0, tree op1) } else tem = op0; - return fold_build2 (BIT_AND_EXPR, type, tem, - build_int_cst_type (TREE_TYPE (op1), - newmask)); + newmaskt = build_int_cst_type (TREE_TYPE (op1), newmask); + if (!tree_int_cst_equal (newmaskt, arg1)) + return fold_build2 (BIT_AND_EXPR, type, tem, newmaskt); } } } |